Want to see something absolutely nuts? Ok, follow me.
"Alexander Polli does the never before done - a tactical flight through a narrow cave on a rugged mountainside. The flight starts with a jump from a hovering helicopter, Alexander reaches speeds of 250 km/h (155 mph) while following a precise trajectory leading to the cave opening, he then fully commits and flies directly through the narrow opening of the 'Batman Cave!'"
Or, in other words: Good lord no no no no no...HOLY Faaaa...
Check it out below for 2 minutes of sweaty palms.[EpicTVadventure]